This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is the residence time of oxygen in the Earth's atmosphere? A) 10 years B) 100 years C) 500 ... (Read 48 times)

jho37

  • Hero Member
  • *****
  • Posts: 531
on: Jul 14, 2018
What is the residence time of oxygen in the Earth's atmosphere?
 
  A) 10 years
  B) 100 years
  C) 500 years
  D) 5000 years

Question 2

The heterosphere:
 
  A) lies below the homosphere.
  B) contains primarily heavy gases.
  C) is populated primarily by variable gases.
  D) is named for its chemical homogeneity.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

aliotak

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: C


jho37

  • Member
  • Posts: 531
Reply 2 on: Jul 14, 2018
:D TYSM

coreycathey

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Earth as viewed from Lunar orbit during the Apollo 8 mission, Christmas Eve, 1968. Africa is at the Earth as viewed from Lunar orbit during the Apollo 8 mission, Christmas Eve, 1968. Africa is at the
The declining age of menarche over the past 150 years has been measured in many European countries, The declining age of menarche over the past 150 years has been measured in many European countries,
On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a
Gossip and ridicule increase the status insecurity of this time of life. Gossip and ridicule increase the status insecurity of this time of life.
A conventional zirconia oxygen sensor can only reset to exhaust mixtures that are richer or leaner ... A conventional zirconia oxygen sensor can only reset to exhaust mixtures that are richer or leaner ...
Early Earth Early Earth
Video: DNA fingerprinting Animation

For a complete list of videos, visit our video library